JPH1032025A - Conductor connecting device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To simplify assembly work and surely connect a conductor on the inner circumferential surface and the inner surface of a first recess to a first conductor in a conductor connecting device. SOLUTION: A conductor connecting device has a first conductor 12, a first cylindrical solid insulator 3 which covers the first conductor 12 and forms a first recess 3a at one end, a second conductor 2, a second cylindrical solid insulator 4 which covers the second conductor 2 and forms a second recess 4a by projecting one end of the second conductor 2 to the inside, a conductive enlargement part 13 which is integrally formed with one end of the first conductor 12 and comes in contact with the bottom surface of the first recess 3a, a conductive cylinder part 14 which is integrally formed with the conductive enlargement part 13 and comes in contact with the inner circumferential surface of the first recess 3a, and a finger contact 5 which is electrically connected to the first conductor 12 and housed in the conductive cylinder part 14, and the second conductor 2 is inserted into the finger contact 5 so as to elastically contact each other, and the first conductor 12 and the second conductor 2 are electrically connected.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a conductor connecting device used for, for example, a solid-insulated switchgear and the like, which connects and connects conductors coated with solid insulation.

[0002]

2. Description of the Related Art FIG. 3 is a sectional view showing a conventional conductor connecting device. For example, Japanese Patent Application Laid-Open No.
There is a conductor connection device described in Japanese Patent No. 283220.
4 is an enlarged sectional view showing a main part of FIG. 3, FIG. 5 is a plan view showing an enlarged spiral spring of FIG. 4, and FIG. 6 shows a spiral spring different from FIG. Is a plan view, and (b) is an enlarged sectional view taken along line bb of (a). In the drawing, reference numeral 1 denotes a first cylindrical conductor, 2 denotes a second cylindrical conductor, and 3 denotes a first cylindrical solid insulator formed by concentrically covering and covering the first conductor 1 and using an epoxy resin or the like. A joint 3b having a cylindrical first concave portion 3a is provided in the portion. The outer shape of the joint 3b has a shape of a truncated cone. Reference numeral 4 denotes a second cylindrical solid insulator formed by concentrically covering and covering the second conductor 2 and made of epoxy resin or the like, and having a joining portion 4b having a frustoconical second concave portion 4a at one end thereof. I have. One end of the second conductor 2 projects and is exposed inside the second concave portion 4a. The shape of the second concave portion 4a is the first cylindrical solid insulator 3
Since the joint 3b is inserted, the outer shape of the joint 3b is similar to that of the joint 3b.

Reference numeral 5 denotes a conductive finger contact which is electrically connected to one end of the first conductor 1 with a bolt 6 and fixed.
Is an air gap between the inner peripheral surface of the second recess 4a and the outer peripheral surface of the joint 3b of the first cylindrical solid insulator 3. Reference numeral 8 denotes a metallikon layer attached to the outer peripheral surface and the outer surface of the first cylindrical solid insulator 3 and the second cylindrical solid insulator 4, and is grounded (not shown). Reference numeral 9 denotes a conductive coating applied to the bottom surface and the inner peripheral surface of the first concave portion 3a, and is connected to the first conductor 1 by also applying a part of the outer peripheral surface of the first conductor 1. Reference numeral 10 denotes a non-magnetic spiral spring, which complements the conductive connection between the conductive film 9 applied to the inner peripheral surface of the first recess 3a and the first conductor 1. Numeral 11 denotes a non-magnetic spiral spring, which is different from the non-magnetic spiral spring 10 in that a braided wire 11b having high conductivity is wound around a spring core wire 11a.

[0004] The conventional conductor connecting device is configured as described above, and the joining portion 3b of the first cylindrical solid insulator 3 is inserted into the second concave portion 4a of the second cylindrical solid insulator 4, and The first concave portion 3a is opposed to the second concave portion 4a, the second conductor 2 is inserted into the finger contact 5, and the first and second conductors 1 and 2 are conductively connected by elastic force. At this time, the insertion amount of the second conductor 2 into the finger contact 5 is regulated so that an air gap 7 is formed between the joint 3b and the joint 4b. Creepage insulation distances corresponding to the dielectric strength are provided on the creeping surfaces of the joints 3b and 4b.
A first cylindrical solid insulator 3 and a second cylindrical solid insulator 4
The metallikon layer 8 is grounded.

[0005] The inner peripheral surfaces of the first concave portion 3a and the second concave portion 4a,
There is an atmospheric pressure gap between the finger contact 5 and the first conductor 1 near the finger contact, and when a voltage is applied to the first conductor 1 and the finger contact 5, the electric field intensity in the gap increases to generate corona. Therefore, the conductive coating 9 is applied to the entire inner peripheral surface and the inner surface of the first concave portion 3a and part of the outer peripheral surface of the first conductor 1, and the first conductor 1 and the conductive coating 9 A non-magnetic spring 10 that complements the conductive connection is provided so that they have the same potential and the voltage of the first conductor 1 is applied to the first cylindrical solid insulator 3.

As shown in FIG. 5, the inner diameter of the non-magnetic spiral spring 10 is smaller than the outer diameter of the first conductor 1 in the free state, and the outer diameter is larger than the inner diameter of the first recess 3a. Therefore, when the spring 10 is fitted into the first conductor 1 and further into the first concave portion 3a, the spring 10 has an elastic force that causes the conductive material attached to the inner peripheral surface and the inner surface of the first conductor 1 and the first concave portion 3a. It contacts the coating 9 and complements the conductive connection between them. Further, the inner peripheral surface of the first concave portion 3a and the conductive coating film 9 adhered to the inner surface are rough, and when there is a possibility that the spring 10 may not be able to obtain sufficient contact, the conductivity of the conductive film 9 may be reduced. If the spring 11 around which the high braided wire 11b is wound is used, the conductive connection between the inner peripheral surface of the first concave portion 3a and the conductive coating film 9 adhered to the inner surface can be firmly complemented.

[0007]

Since the conventional conductor connecting device is constructed as described above, the conventional conductor connecting device can be moved to the inner peripheral surface and inner surface of the first concave portion 3a, which is a recessed position, and to a part of the first conductor 1. There is a technical problem that needs to be solved such as the formation of the conductive coating film 9 and the complexity of the assembling work. The present invention is intended to solve the above-described problem, and simplifies the assembling work, and also ensures the connection between the first conductor 1 and the inner peripheral surface of the first recess 3a and the conductor on the inner surface. It is intended to provide a device.

[0008]

In the conductor connecting device according to the present invention, a first conductor, a first cylindrical solid insulator having a first concave portion formed at one end by covering the first conductor concentrically and covering the first conductor. A body, a second conductor, and a second recess in which the second conductor is concentrically housed and covered to form a second recess in which one end faces the first recess and one end of the second conductor projects inside. A cylindrical solid insulator, a conductive enlarged portion integral with one end of the first conductor and in contact with a bottom surface of the first concave portion, and an integral peripheral surface of the first concave portion integral with the conductive enlarged portion; And a finger contact electrically connected to the first conductor and housed in the conductive cylindrical portion. The second concave portion of the second cylindrical solid insulator is provided with the first cylindrical solid insulator. Insert the second conductor into the finger contact, facing the first recess of the body Is contacted by the elastic force is to conductively connecting with the first conductor and the second conductor.

Further, the first conductor, the first cylindrical solid insulator having the first conductor concentrically housed and covered to form a first recess at one end, the second conductor, and the second conductor concentrically. A second cylindrical solid insulator in which a second concave portion is formed in which one end portion is opposed to the first concave portion and one end portion of the second conductor is protruded inside; And a grounded metallikon layer provided on the outer peripheral surface of the second cylindrical solid insulator;
A conductive enlarged portion integral with one end of the first conductor and in contact with the bottom surface of the first concave portion, a conductive cylindrical portion integral with the conductive enlarged portion and in contact with the inner peripheral surface of the first concave portion, And the first
A finger contact electrically connected to a conductor and housed in the conductive cylindrical portion, wherein the second concave portion of the second cylindrical solid insulator is interposed with the first concave portion of the first cylindrical solid insulator via a gap; Opposing, inserting the second conductor into the finger contact and contacting the first conductor by elastic force.
The conductive connection between the conductor and the second conductor.

[0010]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiment 1 Hereinafter, embodiments of the present invention will be described with reference to the drawings. FIG. 1 is a sectional view showing a conductor connection device according to Embodiment 1 of the present invention, and FIG. 2 is an enlarged sectional view of a main part of FIG.
This conductor connection device is used, for example, at a line voltage of 22 KV. In the figure, reference numeral 12 denotes a first cylindrical conductor,
Is a cylindrical second conductor, and 3 is a first cylindrical solid insulator formed of an epoxy resin or the like by concentrically covering and covering the first conductor 12, and having a cylindrical first concave portion 3a at one end thereof. 3b is provided. The outer shape of the joint 3b has a shape of a truncated cone. Reference numeral 4 denotes a second cylindrical solid insulator which is formed by covering the second conductor 2 concentrically and formed of epoxy resin or the like, and a joining portion 4 having a frustoconical second concave portion 4a at one end thereof.
b is provided. The second conductor 2 is provided inside the second concave portion 4a.
Has one end protruding and exposed. Since the joint 3b of the first cylindrical solid insulator 3 is inserted, the shape of the second recess 4a is similar to the outer shape of the joint 3b.

A first conductor 13 is integrated with one end of the first conductor 12 to form a first conductor.
The enlarged conductive portion 14 which is in contact with the bottom surface of the concave portion 3a is a conductive cylindrical portion which is integral with the enlarged conductive portion 13 and is in contact with the inner peripheral surface of the first concave portion 3a. First conductor 12 and enlarged conductive portion 1
3 and the conductive cylindrical portion 14 may be formed integrally by cutting a cylindrical base material, or may be formed integrally by brazing after manufacturing each part independently. . Reference numeral 5 denotes a conductive finger contact, which is electrically connected to a conductive enlarged portion 13 fixed to one end of the first conductor 12 with bolts 6 and fixed, and is mostly housed in the conductive cylindrical portion 14. . Reference numeral 7 denotes an air gap between the inner peripheral surface of the second concave portion 4a and the outer peripheral surface of the joint 3b of the first cylindrical solid insulator 3. Reference numeral 8 denotes a metallikon layer attached to the outer peripheral surface and the outer surface of the first cylindrical solid insulator 3 and the second cylindrical solid insulator 4, and is grounded (not shown).

The first conductor 12, the enlarged conductive portion 13, and the conductive cylindrical portion 14 which are formed integrally in advance are formed integrally with the first cylindrical solid insulator 3. After that, the finger contacts 5 are inserted into the conductive cylindrical body 14 and fixed with bolts 6. The second conductor 2 is formed integrally with the second cylindrical solid insulator 4, and one end of the second conductor 2 projects into the second recess 4a and is exposed. In such a configuration, the joining portion 3b of the first cylindrical solid insulator 3 is inserted into the second concave portion 4a of the second cylindrical solid insulator 4, and the first concave portion 3a faces the second concave portion 4a. The two conductors 2 are inserted into the finger contacts 5 and are brought into contact with each other by elastic force to electrically connect the first conductor 12 and the second conductor 2. At this time, the insertion amount of the second conductor 2 into the finger contact 5 is regulated so that an air gap 7 is formed between the joint 3b and the joint 4b. It is not essential to provide the air gap 7, but if the air gap 7 is provided, there is no contact between the outer peripheral surface of the joining portion 3b and the inner peripheral surface of the joining portion 4b, and there is no contact scratch on the peripheral surfaces of each other. And the disturbance of the electric field intensity can be avoided. Creepage insulation distances corresponding to the dielectric strength are provided on the creeping surfaces of the joints 3b and 4b. The metallikon layers 8 of the first cylindrical solid insulator 3 and the second cylindrical solid insulator 4 are grounded.

The inner peripheral surfaces of the first concave portion 3a and the second concave portion 4a,
Finger contacts 5, first conductors 1 and 2 in the vicinity thereof
Since there is a space of atmospheric pressure between the conductor 2 and the first conductor 1, the finger contact 5, and the second conductor 2, when a voltage is applied, the electric field strength of the space is increased and corona is generated. A conductive enlarged portion 13 and a conductive cylindrical portion 14 integrated with the first conductor 12 are provided on the inner peripheral surface and the entire inner surface of the concave portion 3a so as to cover the inner surface and the inner surface. The voltage of the first conductor 12 is applied to the first cylindrical solid insulator 3. Therefore, generation of corona can be prevented.

In this embodiment, the finger contact 5 comes into contact with the second conductor 2 by its own elastic force. However, the present invention is not limited to this, and the finger contact 5 has another configuration such as a tulip contact. It may be.

[0015]

Since the present invention is configured as described above, it has the following effects. According to the conductor connection device of the present invention, the first conductor, the first conductor having the first conductor concentrically housed and covered to form the first recess at one end.
The cylindrical solid insulator, the second conductor, and the second conductor are concentrically housed and covered, and one end thereof faces the first recess, and
A second cylindrical solid insulator having a second recess formed by projecting one end of the conductor into the inside, a conductive enlarged portion abutting on a bottom surface of the first recess integrally with one end of the first conductor; A conductive cylindrical portion integral with the conductive enlarged portion and in contact with the inner peripheral surface of the first concave portion; and a finger contact electrically connected to the first conductor and housed in the conductive cylindrical portion. (2) The second concave portion of the cylindrical solid insulator is opposed to the first concave portion of the first cylindrical solid insulator, the second conductor is inserted into the finger contact, and the first conductor and the first conductor are brought into contact by elastic force. Since the two conductors are conductively connected, the assembling work can be simplified, and the connection between the inner conductor of the first recess and the conductor on the inner surface and the first conductor can be ensured.

The first conductor, the first cylindrical solid insulator having the first conductor concentrically covered and covered to form a first recess at one end, the second conductor, and the second conductor concentrically. A second cylindrical solid insulator in which a second concave portion is formed in which one end portion is opposed to the first concave portion and one end portion of the second conductor is protruded inside; And a grounded metallikon layer provided on the outer peripheral surface of the second cylindrical solid insulator;
A conductive enlarged portion integral with one end of the first conductor and in contact with the bottom surface of the first concave portion, a conductive cylindrical portion integral with the conductive enlarged portion and in contact with the inner peripheral surface of the first concave portion, And the first
A finger contact electrically connected to a conductor and housed in the conductive cylindrical portion, wherein the second concave portion of the second cylindrical solid insulator is interposed with the first concave portion of the first cylindrical solid insulator via a gap; Opposing, inserting the second conductor into the finger contact and contacting the first conductor by elastic force.
Since the conductor and the second conductor are conductively connected, the assembling work is simplified, and the inner peripheral surface of the first recess and the conductor on the inner surface and the first conductor are connected.
The connection with the conductor can be ensured.

[Brief description of the drawings]

FIG. 1 is a sectional view showing a conductor connection device according to a first embodiment of the present invention.

FIG. 2 is an enlarged sectional view of a main part of FIG.

FIG. 3 is a cross-sectional view showing a conventional conductor connection device.

FIG. 4 is an enlarged sectional view showing a main part of FIG. 3;

FIG. 5 is an enlarged plan view showing the spiral spring of FIG. 4;

6A and 6B show a spiral spring different from that shown in FIG. 5, wherein FIG. 6A is a plan view and FIG. 6B is an enlarged sectional view taken along line bb of FIG.

[Explanation of symbols]

2 2nd conductor 3 1st cylindrical solid insulator 3a 1st concave part 3b joining part 4 2nd cylindrical solid insulator 4a 2nd concave part 4b joining part 5 finger contact 7 air gap 8 metallikon layer 12 1st conductor 13 conductivity Enlarged part 14 Conductive cylindrical part

Claims (2)

[Claims] 1. A first cylindrical solid insulator having a first conductor, a first concave portion formed at one end by covering the first conductor concentrically and covering the first conductor, a second conductor, and a second conductor concentrically. A second cylindrical solid insulator in which a second recess is formed in which one end of the second conductor faces the first recess and one end of the second conductor protrudes inside; A conductive enlarged portion integrally contacting the bottom surface of the first concave portion, a conductive cylindrical portion integral with the conductive enlarged portion and abutting on the inner peripheral surface of the first concave portion, and electrically connected to the first conductor. And a finger contact accommodated in the conductive cylindrical portion, the second concave portion of the second cylindrical solid insulator being provided in the first cylindrical solid insulator.
A conductor connecting device that faces the recess, inserts the second conductor into the finger contact, and makes contact with the elastic contact to conductively connect the first conductor and the second conductor. 2. A first conductor, a first cylindrical solid insulator in which the first conductor is concentrically covered and covered to form a first recess at one end, a second conductor, and the second conductor are concentric. A second cylindrical solid insulator in which a second concave portion is formed in which one end portion is opposed to the first concave portion and one end portion of the second conductor is protruded inside; And a metallikon layer provided on the outer peripheral surface of the second cylindrical solid insulator and grounded; a conductive enlarged portion integral with one end of the first conductor and in contact with a bottom surface of the first concave portion; A conductive cylindrical portion integrally contacted with an inner peripheral surface of the first concave portion; and a finger contact electrically connected to the first conductor and housed in the conductive cylindrical portion, wherein the second cylindrical solid is provided. The second concave portion of the insulator is opposed to the first concave portion of the first cylindrical solid insulator via a gap, and A conductor connection device for inserting the second conductor into the finger contact and bringing the first conductor and the second conductor into conductive contact with each other by elastic force.